Question

Glycolysis produces 2 molecules of ATP while respiration produces ____ molecules of ATP.







A.

10





B.

14





C.

34





D.

40

Answer 1

@BrennaM, @FirstFrostByte, @Frostbite

Answer 2

what unit and lesson

Answer 3

unit 6:cell energy

Answer 4

resperation and breathing

Answer 5

gimme a minute. r u in CA?

Answer 6

yeah

Answer 7

u in NCA?

Answer 8

cali

Answer 9

how can u be in Unit 6? theres only 5 units in Biology A. do u mean lesson 6?

Answer 10

u3 l6?

Answer 11

no im in advanced acdemics

Answer 12

oooh ok

Answer 13

sorry. im in 9th grade. i dont think i can help

Answer 14

its ok

Answer 15

why';d you give me a medal?

Answer 16

i was no help at all

Answer 17

When you say "respiration" you then mean: the net ATP gained from glycolysis, Krebs cycle and the ETC (Electron Transport Chain)?
But I hate that question becuase that is one of the few holes where people can't fully agree... so I give 2 outlines one more detaled then the other:
________________
1. statement:
Glycolysis: Conversion of glucose into pyruvate (in the cytoplasm):
Phosphorylation of glucose: -1
Phosphorylation of fructose-6-phosphate: -1
Dephosphorylation of 2 molecules of 1,3-BGP: +2
Dephosphorylation of 2 molecules of phosphoenolpyruvate: +2
(2 molecules of NADH are formed in the oxidation of 2 molecules of gluceraldehyde-3-phosphate.)
Conversion of pyruvate into acetyl-CoA (inside the mitochondria):
(2 molecules of NADH are formed)
Citric acid cycle / Krebs cycle (inside mitochondria):
2 molecules of ATP are formed from 2 molecules of succinyl-CoA: +2
(6 molecules of NADH are formed in the oxidation of 2 molecules each of isocitrate, alpha-ketoglutarate, and malate.)
(2 molecules of FADH2 are formed in the oxidation of 2 molecules of succinate)
Oxidative phosphorylation / ETC (inside the mitochondria):
2 molecules of NADH formed in glycolysis each yields 1.5 molecules of ATP (assuming transport of NADH by the glycerol-3-phosphate shuttle: +3
2 molecules of NADH formed in the oxidative decarboxylation of pyruvate; each yields 2.5 molecules of ATP: +5
2 molecules of FADH2 formed in the citric acid cycle; each yields 1.5 molecules of ATP: +3
6 molecules of NADH formed in the citric acid cycle ; each yields 2.5 molecules of ATP: +15
Net yield per molecule of glucose: +30 (maximum about 32 if effincient shuttles where used to the maximum)
P.C.Hinkle, M.A. Kumar, A.Resetar and D.L, Harris, Mechanistic stoichiometry of mitochondrial oxidative phosphorylation. Biochemistry 1991.
J.B Reece, Campbell biology 9e
J. M. Berg, J. L. Tymoczko and L. Stryer, Biochemistry 7e.


However I like to make a note to this: the current value of 30 molecules of ATP per molecule of glucose supersedes the earlier value of 36 moleclues of ATP. The stoichiometries of proton pumping, ATP synthesis, and metabolite transport should be regarded as estimates. About 2 more molecules of ATP are formed per molecule of glucose oxidized when the malate-aspartate shuttle rather than the glycerol-3-phosphate shuttle is used.

___________________
2. statement:
38 ATP, no argument why, just got a wrong answer for answering 32 ATP to my exam, then got told it is 38 ATP by my lecture in functional genomics.